So if you use the menu of the gui go to files/settings, choose the current image profile (for example CBM DOS sector image) and set the "track distance" field to "40 Tracks".
I adjusted the setting as you suggested (40 tracks instead of 80), but unfortunately nothing changes, i get a situation identical to the previous screenshots i posted (doublestepping and "T" orange boxes).
Unless the disks surface and the heads where cleaned properly before reading I guess this disk is fading away. I'ts not the usually problem with some mold spots ore similiar which only effects partial areas of the surface. This floppy is in a very bad condition as a whole...
On the other hand it could also be a drive related problem as there are some dd drives which don't like GCR coding at all. I prefer the hd panasonic ju-475 for reading c64 stuff!
The drive dumping the disk has no problem with 1541s GCR-coding, the scatter plot shows the drive filter cuts off way below the fastest bitcells when looking at the noise from the unformatted tracks.
The stepping issue is that as KryoFlux was designed to be used with 80-track drives it can't be configured to manage disks with a 40-track drive. To do any track analysis with a dump generated using a 40-track drive the user has to manually rename the files for correct track numbers.
But wouldn't it be nice to read dd disks with a 48tpi drive (only true cbm format floppies with no copy protection involved)? Because the gap in the had is a bit wider (compared to a 96 tpi drive) it should result in a better signal/noise ratio (assuming that disk was written with a 48 tpi head, but hey the 1541 had a 48tpi head afaik)!
Or am I missing something and have to learn more again today
However, while i'm at it, i'd like to take a dump of these disks, even if there will be many demaged sectors.
So, if I uderstood correctly, the procedure to do this is:
1) take a preservation stream of the disk
2) rename the tracks
3) use the preservation stream as input file, and obtain a .d64 or .img file
For me it's not clear how to do 2) and 3).
For point 2): How do i rename the files? It would be fast to do with a .bat file, but i need to know how to rename them, can you tell me as an example how to rename these files?
track00.0.raw --> [new name]
track00.1.raw --> [new name]
track01.0.raw --> [new name]
track01.1.raw --> [new name]
track02.0.raw --> [new name]
track02.1.raw --> [new name]
For point 3): can you tell me the syntax to do this? I imagine that it's not possible from the GUI.
track00.0.raw -> 00.0.raw
track01.0.raw -> 02.0.raw
track02.0.raw -> 04.0.raw
track03.0.raw -> 06.0.raw
track04.0.raw -> 08.0.raw
For side 1 tracks you'd have to start from track 8 (track00.1.raw -> 08.1.raw) and you'll lose the first four tracks as reading those requires the flippy modified drive.
Renaming could be done from a commandline with some batch script. There are also software like Total Commander that has a multi rename -feature where you select all the *.0.raw files, then set a destination filename+counter+.0.raw that counts from 0 in steps of two in two digit accuracy.
Of course, it is difficult to reliably write 48tpi (360k) images in a 96tpi (1.2mb) drive and KF does not support writing non-index aligned streams. But for reading and archiving, it is fine.